Hair straightener



FIG. 1 is a top, front and right side perspective view of a hairstraightener showing my new design;

FIG. 2 is a bottom, rear and left side perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a back elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is an enlarged view of the selected portion in FIG. 1 ; and,

FIG. 10 is an enlarged view of the selected portion in FIG. 1 .

The broken lines shown in the drawings depict portions of the hairstraightener in which the design is embodied that form no part of theclaimed design.

CLAIM The ornamental design for a hair straightener, as shown anddescribed.